Solved

Solve the Inequality $- x ^ { 2 } - 18 x - 81 < 0$

Question 42

Multiple Choice

Solve the inequality. $- x ^ { 2 } - 18 x - 81 < 0$

A) $( - \infty , \infty )$
B) $( - \infty , - 9 ) \cup ( 9 , \infty )$
C) $( - \infty , - 9 ) \cup ( - 9 , \infty )$
D) { }

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